This program shows you the 3D distribution of galaxies observed by the Sloan
Digital Sky Survey. The data consists of the 3D positions of 131,000 galaxies
observed to date. Note, how galaxies tend to be close to one another, forming
walls and filaments.

The data is located on several 'wings', these only reflect the sky coverage,
i.e. the observations are still rather incomplete. When finished, in 2005,
there will have a full three-dimensional map of a large cone in the Northern
Sky. There will always be a gap around the plane of the Milky Way -- there is
too much dust there to see through, therefore that region was avoided.